166363743 has 16 divisors (see below), whose sum is σ = 273007616. Its totient is φ = 87752160.

The previous prime is 166363741. The next prime is 166363759. The reversal of 166363743 is 347363661.

It is not a de Polignac number, because 166363743 - 2¹ = 166363741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166363741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304423 + ... + 304968.

It is an arithmetic number, because the mean of its divisors is an integer number (17062976).

Almost surely, 2^166363743 is an apocalyptic number.

166363743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

166363743 is a deficient number, since it is larger than the sum of its proper divisors (106643873).

166363743 is a wasteful number, since it uses less digits than its factorization.

166363743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609414.

The product of its digits is 163296, while the sum is 39.

The square root of 166363743 is about 12898.2069684123. The cubic root of 166363743 is about 549.9875953125.

The spelling of 166363743 in words is "one hundred sixty-six million, three hundred sixty-three thousand, seven hundred forty-three".